Home / 3,155.96-4,355-1,897.06

Finding the Fourth Proportional to 3,155.96, 4,355 and 1,897.06

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Solution

The fourth proportional to 3,155.96, 4,355 and 1,897.06 is: 2,617.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,155.96 : 4,355 = 1,897.06 : x
  2. Step 2: Convert to fraction form
    3,155.96/4,355 = 1,897.06/x
  3. Step 3: Cross multiply
    3,155.96x = 4,355 × 1,897.06
  4. Step 4: Simplify right side
    3,155.96x = 8,261,696.30
  5. Step 5: Solve for x
    x = 8,261,696.30/3,155.96
  6. Step 6: Final answer
    x = 2,617.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.